Quote Originally Posted by Poisson Du Jour View Post
Use a cable release!
Beat me to it.

Twice now I have found myself without cable release when shooting the Zeiss Ikonta. Both times I resorted to folding stems of dry grass into a shape suited to pressing the shutter lever on the front of the lens. In one case the tripod was too spindly for the double duty of holding camera still and steady. So I had motion blur.

Note to self. This defeats the "double-exposure-prevention" interlock.